Index tab



ou. s, 193,1.

L. S. GRAFF ET AL I NDEX TAB Fled June llv. 1931 i? mw e' SEm'w/NVENTORSA TTORN EY Patnted ocr. 6, 1931Y LELAND sQcaArr, OFQARLINGTON, ANDRoBEn'rAsrnwAnT, OFWATERTOWN, MASSA- CI-ISETTS, ASSIGNORS TOy GEORGE B.GRAFF:

COMPANY, v0F CAMBRIDGE, MASSACHU- seras, A CORPORATION ornAs'sAcHUsE'rtrs Y INDEX 'TAB ,y

.Y I Application le'd' .Tune 11,

Gur invention relates to an improved in- -V dex tab, and among itsobjects are the provision Yof a durable, simple and inexpensive tabwhich may readily be attached to a card, sheet, etc., will hold itsposition firmly and et is readil removableand transferable is easy andpositive in operation and may be used repeatedly. f f

Metal lndex tabs .as now manufactured are k3Q commonly made of two stripportions of met- D materiah such as Celluloid, is centrally foldalsothat both the bottom or clip portion and the top orindex portion are of`metal. An aperature may be providedy in the index portion7 through whichindicating characters n on an inserted strip are visible. The'k clipportion of such tabs starts with a shoulder just below the index portionwhereby the clipping strips are separated to permitthe insertion of thecard or sheet to which` the tab is attached.

index portion of the tab may be constructed entirely of an inexpensivematerial and may be made transparent, thereby completely enclosing anappropriate insert strip bearing indicating characters which maybereadily inserted or changed as desired; With these and other objectsand advantages in mind,

' our index tabl comprises, briefly, an upper "'in'dex portionformed byvcentrally folding a strip of celluloidor other transparent materialuponitself, with a kclip portion of metal or other'suitable material secured'to the in- Y dex portion by means offrivets orother fastening means.lTf the two legs, of the folded strip do not give' a sufficientthickness to adequately separate the clipping strips, yone or morestrips ofcelluloid or other suit- .'able material may be interposedbetween the edges of the folded strip, thereby making any or otherspringy material for the clipping strips. `With our new construction theupper cardi or sheet. f

i931'. senti No. 543,570.

desired width of separation between the upper endsv of the clippingstrips. l 1A preferred formof our improved clip is shown in Atheaccompanying drawings, in

which Fig. 1 is a perspective view of our clip attached to a card, f

Fig. 24 is a transverse vertical sectional -viewtaken on the line 2 2 ofFig. 1.

A strip or sheet of' suitable transparent o0 ed upon itself as shown at4 to form the upper or'index portion of the tab. The transparent sides 5and 6 of this portion may be spaced apart by the insertion between thelower ends thereof of'a narrow strip 7 This strip may A"conveniently-beof the same material as the sheet' 3, but since the lower portion -oflthe tabv is not necessarily transparent, it may be of any suitablematerial. This construction leaves the slot 8, into which a strip 9 ofpaper,V carboard,` etc., bearing indicating characters, may readily beslidably inserted so that kthe'characters are visible through thetransparent face 5. Notches may be cut 75 linthe sides 5 and 6 asindicated at 10, to facilitate'the insertion and removal of the strip 9.The bottom or clip portion of the tab consists of'two plain strips'lland 12 which are preferably'of thin sheet metal, but which may vbe ofany suitable springy material. These strips ,are attached one on eitherside of the ilower-partof the index portion of the tab in the mannershown in detail in Fig. 2,` by means'ofrivets 13 or other suitablefastening` means; The strips 11 and12 arethus spaced apart andsecnrelyheld in parallel relationgship, leaving between `them the vspace14 for the reception of the edge of the card or sheet to which the tabisto be attached. The lower ends of the strips 11 and 12 are turnedinwardly toward each other as shown at 15 and 16:,to such an extent thatwhen the clip is knot inuse the lowermost edges will normallytouch eachother. `When the tabis slipped over theedge ofa card or sheet, theseloweredges ofther strips 1l and 12 serve to grip the card rmly andholdthe tab securely7 and adjustably in place on the edge of the `Our tab,while leaving the indicating; '1 fcharacters on'. thejstrip V9` readilyvisible,

' protectsV thisV indicating strip andthe char-r actors thereon froinsoiling and wear, `and furnishesconvenient,l uri-gid, andvv durablemeans for handling the card or Sheet to which` Y j L" the tab may beattached.V A new stripfQ bear-4v .ing different indicating .charactersymay read- ?.ilyibe substituted. The tab'is Y firrnly andV 1 I tYYrigidly'held in plaeeand yetfisV readily'ad'-` 7 justableand'rernovable,.and may be attached and detachedanynuniber of timeswithoutv f.

the slightest impairment of.itsfeficienoy"4 `v The leg orjclipportions'of our, device. are ofthe simplest-'charaot'en whioh'rnakes forflowoost of manufacture and the-character Y ofv our index portionpermitstlie'lls'exofanv finexpensive, transparent'indexgstripenclosfAinginaterial, which actsfalso as a stop `to insure uniform projectionofthe tab abovethe i' edge of theoardor sheetvr to whichl it` is at'tached and as a separator for'vthe leger Y,clip

- portions ofthe device. The simplicity of'conportionoonsisting of asheetoftransparent 4 v fmaterial 4centrally folded uponul itself andwith itsends spaced apart-by-a narrow strip inserted therebetween, andalowerclip porf Astructiwin and the inexpensive materials used Y permitthe manufacture of your tab at alow cost, Yand at.y the same time ourconstruction fprovides ,distinct advantages manipulation .and use. Weclaimtf r; v Y

l. AnindexY-tab `comprising an upper lindex tion consistingr of twofpara'llel'flat sheets: of

:springy' linatezrialwith their lower edges f; turned: toward each 1otherf and their .l upper indexportion Acorisistifngfof .a-sheet of'trans= parent'mate'rial eentrally'folded uponitself f edgesfspaoed apartby: the,insertionztherebe# Y tween Yof the l'owenpart of the indexportion, .e the1 whole being held Vtogether by fastening Y means*throughy thepa-rts thus overlapping.

andwith its ends fspaced apart by a-narrow "stripf inserted; t-herebetween,y and a lower or clip portionoonsisting of two` metal sheetsV.in parallelirel'ationshipwith'their'lowerrnost Y edges turnedtowardeach other,the two por-V Vtions partly overlapping and thewholebeing held together by rivets passing through the l overlappingportions.y

. .e LELAN'D-s, GRAFF; Y.

. RoBERTAsTEw-Aa'r-f;

